US3549145A - Stacking apparatus for plastics material sheeting - Google Patents

Stacking apparatus for plastics material sheeting Download PDF

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Publication number
US3549145A
US3549145A US740334A US3549145DA US3549145A US 3549145 A US3549145 A US 3549145A US 740334 A US740334 A US 740334A US 3549145D A US3549145D A US 3549145DA US 3549145 A US3549145 A US 3549145A
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United States
Prior art keywords
workpieces
conveyor
conveyors
chain
gripping tools
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Expired - Lifetime
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US740334A
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English (en)
Inventor
Karl-Heinz Trautmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/24—Pile receivers multiple or compartmented, e.d. for alternate, programmed, or selective filling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
    • B65H29/041—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands and introducing into a pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58—Article switches or diverters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3054—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/191—Bags, sachets and pouches or the like

Definitions

  • Means for collectin the work ieces are ro- [54] STACKING APPARATUS FOR PLASTICS vid ed fatfieast two endless chain cosveyors ex end through a MATERIAL SHEETING common workpiece-charging area.
  • the collecting means asm sociated with the chain conveyors are spaced apart.
  • Each [52] US. 271/79; chain conveyor extends as far as to the associated collecting 93/93 means.
  • the chain conveyors are provided with regularly [5]] lat.” B65h 29/28, spaced gripping tools only in sections of their length.
  • the conveyor chains convey the workpieces in a continuous succession so that a continuously growing stack of workpieces is formed.
  • two stacking magazines have already been provided, which are moved in alternation into the range in which the gripping tools release the workpieces. This practice cannot be adopted unless the change of magazine can be performed within the time between the ejection of two workpieces.
  • the large numbers of workpieces to be handled per unit of time in modern machines for processing paper and sheeting and the fact that the workpieces are often large do not permit of such a fast change in many cases.
  • This object is accomplished according to the invention in that at least two endless chain conveyors extend through a common workpiece-charging area, the collecting means associated with the chain conveyors are spaced apart, each chain conveyor extends as far as to the associated collecting means, the chain conveyors are provided with regularly spaced gripping tools only in sections of their length and those length sections of the chain conveyors which are provided with gripping tools are staggered so as to move in alternation without interruption through the workpiece-charging area.
  • the chain conveyors can receive in their .common workpiececharging area in a continuous succession the workpieces coming from the processing machine and each conveyor then conveys workpieces in the number received by it, which number corresponds to the number of grippers in its length section provided with grippers, to the associated collecting or depositing station.
  • each chain conveyor conveys workpieces only in one part or a plurality of parts of its entire length, the entire transit time of each chain length section which is not provided with gripping tools is available for the discharge of the previously formed stack of workpieces.
  • each chain conveyor and the collecting means associated with it can form individual stacks containing a predetermined number of workpieces.
  • the number of workpieces in each stack may correspond either to the number of gripping tools in one series of gripping tools or a multiple of that number, if the stack is not discharged until a plurality of series of gripping tools have passed.
  • the chain conveyors may differ in length.
  • the longer chain conveyor must have at least two series of gripping tools and two length sectionswhich are free of gripping tools.
  • the delivery stations may be in the same plane. It will be desirable, however, if the chain conveyors have the same length and their lower courses extend in different planes because this requires only a small space.
  • the means for collecting the workpieces may be associated with the lower courses of the chain conveyors and may consist of a transverse belt conveyor for each lowercourse, a transverse stop disposed above the transverse belt conveyor and engageable by the leading end of the workpiece, and means for opening the gripping tools shortly before they reach the transverse stop. and the transverse belt conveyors may be intermittently operable in such a manner that they perform their conveying movement only during the transit of that length section of the associated chain conveyor which is free of gripping tools along the lower course of said conveyor.
  • the removal of the stacks of workpieces from the transverse belt conveyors may be carried out'in various ways.
  • the transverse belt conveyors may extend out of the apparatus on the same side and the lower transverse belt conveyor may be longer than the upper one, the upper belt conveyor may be succeeded by a transfer belt conveyor which is alternately driven in synchronism with the upper and lower transverse belt conveyors, respectively.
  • the transverse belt conveyors may extend out of the apparatus in opposite directions so that the stacks of workpieces are removed from the stacking apparatus or charged to further belt conveyors in alternation on both sides of the stacking apparatus.
  • the transverse belt conveyors may extend in diverging directions out of the apparatus on the same side of the chain conveyors so that the stacks of workpieces can be removed in alternation from the transverse belt conveyors at juxtaposed delivery stations.
  • the transverse belt conveyors extend suitably on the same level at their delivery ends.
  • the spacing of the gripping tools is less than the length of the conveyed workpieces and the speed of travel of the chain conveyors is less than the speed of travel of the workpieces in the preceding processing machine.
  • the workpieces are suitably charged in such a manner that the chain conveyors extend in an approximately vertical plane in the workpiece charging area and the workpieces are fed in a vertical direction.
  • a pivoted deflector plate may be disposed below the last set of workpiece-conveying rollers and may serve to deflect the free ends of the workpieces outwardly so that they do not drop onto next succeeding gripping tools, which follow at a distance which is less than the length of the workpiece, and an interference with the proper charging of the gripping tools will be avoided.
  • the gripping tools consist suitably of an elongated carrier, which is provided with grippers and secured with mating members to the pair of conveyor chains.
  • the movable gripping jaw of each gripper consists suitably of a pin, which is urged by a spring against the fixed gripping jaw.
  • the mouth of each gripper is provided on the workpiece-receiving side with converging guide plates so that the workpieces which fall freely as they are charged from above, as has been proposed hereinbefore, will be reliably gripped.
  • FIGS. 1 and 2 are, respectively, a side elevation and a sectional view taken on line A-A in FIG. 1 and show a stacking apparatus according to the invention, which apparatus comprises two chain conveyors;
  • FIG. 3 is a longitudinal sectional view taken on line 3-8 in FIG. 3 and shows the gripping tool
  • FIG. 4 shows the gripping tools in a transverse sectional view taken on line C-C in FIG. 3;
  • FIGS. 5-10 show in side elevations and top plan views a plurality of desirable embodiments and arrangements of the transverse conveying means.
  • the apparatus shown in the drawing comprises essentially two chain conveyors.
  • Each of said conveyors comprises two endless conveyor chains, 1, 1' and 2 2.
  • the upper courses of the conveyor chains are trained over sprockets 3, 4, 5, 6 and are parallel and extend in the same plane, as is apparent from I'e'ii'gth of one chain conveyor.
  • FIG. .1 shows thatfthe .lowercourses lie in different a rifles because the chain; conveyor 1, v1 is trained over the sprockets 7, and the conveyorf 2, 2""is trained over the
  • theselsections may difl'er in length and-the series-of ppingtoolsmay comprise different numbers of such tools, v proyided'that the total length of those length sections which are providediwith gripping tools is exactly aslarge'as the p ,A belt conveyor.
  • 1 1 or 12 consisting preferably of a plurality I offi'ndividual conveyor, belts is disposed under the lower I 1' co rseof each conveyor 1, l'or 2, 2!.
  • the belt conveyors 11, j 112' travel transversely tothe direction of travel of the chain.
  • outer partof the upper transverse beltconveyor 11 is preferably downwardlyinclined to the level of the other trans:
  • each individual conveyor belt' is' trained around'a respective reversing p'ulleylll orl'2", respectively. These pd leys are mounted on a line which'is parallel to the-Ie'adingedg of the stack.
  • the'transverse belt conveyors may extend and convey in opposite directions. so that the stacks ofwofrkpiecesare freely accessible on both sides of the As is shown in FIGS. 3 and 4,.
  • the gripping-tools 10a, 10b consist of an elongated carrier 21, which corresponds to the widthjof the workpieces and is secured with the aid of the lateral mating members 21 ,to the pair of conveyor chains 1,
  • Each gripper. comprises a fixed gripping jaw 23', a stop 24forthe workpiece W and a movable gripping jaw in'theform ofa pin 25,which is movable upand down and biasedby afs'pring '26.
  • the pins. 25 l ofthe gripping tool are moved up and down at the same time by a bar 27,-which has forklike indentations 28,,where the bar engages the-undeeside of collars 29, which are carried by the pins .and engaged from-above by thefsprings 26.
  • the transverse belt conveyors 11, l2 may be extend at right .4
  • transfer belt conveyor Hollis provided with a separate drive motor and is alternately drij en in' synchronism with, thewupper and lower transverse conveyors, respectively, so that the transfer belt conveyor cfairtreceive the stacks of, workpieces fromlthe upper transjvepse belt conveyor duringthe operationof the latter and can transfer the stacks car'riedlby; it to the lower transverse'belt -.conveyor when the latter isinoperation.
  • the transverse belt'con z -v 11,12 may extend obliquelywith respect to the chain conveyors l, 1 and 2, 2' and may diverge outwardly from the latter to the sameyside sothat-the stacksofworkpieces-being are freely accessible from above,.as is indicated in F]?? 8. .As the trahsversebelt conveyor 12 has then a comnt'of movement which is parallel to the chain conveyor 2,
  • the stop 18 disposed above said transverse belt'conveyor 12 must be pivjigtally moved tothe positionshown in dash-dot lines so that it 'wll not; obstruct the removal of thestacks of workpieces the am-rare secured to levers 30,which are pivoted to the carrier 2l by pins 31.:Cam. follower rollers 32 are rotatably mounted at the free ends of the levers and cooperate with stationary cams 33,3410, raise. and'lower 'the pins 25 so as to open and close the grippers 22.
  • the arrangement of the collars 29 The arrangement of the collars 29.
  • the mouth of each gripper is provided with converging faces 35,'3 6;for guiding the'workpiece asit ente thegripper.
  • the gripping tools have any desired knowndesigng If the spacing 'x of the gripping-tools exceeds the length of workpiece, the workpieces may be delivered to thechain conveyors 1, 1' and -2, 2.” at any desired point of the chainconveyors where the conveyor chains moveparallel to" each other 'in'a common plane and this delivery may be effected with known means, such as rotating gripper cylinders.
  • the chain conveyors l, l and 2, 2 ex tend around-two sprocket sets,5, 6, which are arranged one over the otherso that the conveyors move downwardly in an approximately vertical planebetween these sprocket sets.
  • the workpieces W to be stacked consist in the present embodig' ment of tubesections of paperor plastics material sheeting and are severed in a predetermined length from a continuous tubing 38 by a cutting tool.
  • the gripping tools a, 10b then drag the workpieces in the lower course of the respective chain conveyor 1, 1' or 2, 2' close to the' associated stop 17 or 18 disposed over the belt conveyor 11 or 12 and are opened under the action of the cams 34, 34' shortly before the stop is reached.
  • the leading edge of the workpiece engages the stop 17 or 18 and the workpiece falls by gravity onto the associated belt conveyor 11 or 12, whereas the grippers 22 extend freely through indentations 19, of the stops l7 and 18 (FlGS. 4 and 5).
  • the belt conveyors 11, 12 are inoperative when the workpieces are being dropped so that the workpieces form stacks on the belt conveyors, as is shown in the lower part of FIG. 1 and in FIG. 4.
  • each of the chain conveyors l, 1' and 2, 2' is provided with gripping tools 10a, 10b only in one half of its length, the
  • each chain conveyor is provided with 10 gripping tools so that a stack of'l0 workpieces is formed on and carried away by each belt conveyor l1, 12 during one revolution of the chain conveyors.
  • the belt conveyors 11, 12 will be operated after a plurality of revolutions of the chain conveyors.
  • the chain conveyors havethe same lengths and are provided with different numbers of gripping tools in sec- .tions of different lengths, the stacks formed on the transverse belt conveyors will contain different numbers of workpieces. For instance, if the chain conveyor 1, 1 carries five gripping tools and the chain conveyor 2, 2f carries l5 gripping tools, five workpieces will be deposited on the transverse belt conveyor 12 during each revolution of the chain conveyors.
  • the starting and stopping of the belt conveyors may be automatically controlled by known counter-operated switches, which perform the switching operation when the associated gripping tools 10a, 10b have moved through the lower course once or several times.
  • Stacks containing any desired numbers of workpieces can be formed if the number of gripping tools and/or the number of revolutions of the chain conveyors between two switching operations to control the belt conveyors are properly selected.
  • a stacking apparatus for use with machines for processing paper and plastics material sheeting, preferably for making bags, which apparatus comprises endless conveyor chains which convey the workpieces in gripping tools, and means for collecting the workpieces, characterized in that at least two endless chain conveyors 1,1 and 2,2 extend through a common workpiece-charging area, the collecting means 11, 12, 17, 18, 34, 34' associated with the chain conveyors are spaced apart, each chain conveyor extends as far as to the associated collecting means, the chain conveyors are provided with regularly spaced gripping tools 10a, 10b only in sections of their length and those length sections of the chain conveyors which are provided with gripping tools are staggered so as to move in alternation without interruption through the workpiece-charging area.
  • Apparatus according to claim 1 characterized in that the chain conveyors l, l and 2, 2 have the same length and their lower courses extend in different planes.
  • Apparatus according to claim 2 characterized in that the means for collecting the workpieces are associated with the lower courses of the chain conveyors 1, l' and 2, 2' and consist of a transverse belt conveyor (11, 12) for each lower course, a transverse stop 17, 18 disposed above the transversebelt conveyor and engageable by the leading end of the workpiece, and means 34,34 for opening the gripping tools 10a, 10b shortly before they reach the transverse stop, and the transverse belt conveyors (ll, 12) are intermittently operable in such a manner that they perform their conveying movement only during the transit of that length section of the associated chain conveyor which is free of gripping tools along the lower course of said conveyor.
  • Apparatus according to claim 3 characterized in that the transverse belt conveyors 11, 12 extend in opposite directions out of the apparatus.
  • Apparatus according to claim 8 characterized in that the chain conveyors 1, 1' and 2, 2' extend in an approximately vertical plane in the workpiece-charging area and the work pieces are fed in a vertical direction.
  • Apparatus according to claim 8 characterized by a pivoted deflector plate 4, which is disposed below the last set of workpiece-conveying rollers 39 and serves to deflect the free ends of the workpieces outwardly.
  • Apparatus according to claim 1 characterized in that the gripping tools 10a, 10b consist of an elongated carrier (21), which is provided with grippers (22) and secured with mating members 21' to the pair of conveyor chains 1, 1' or 2, 2'.
  • each gripper (22) consists of a pin (25), which is urged by a spring 26 against the fixed gripping jaw 23.
  • each gripper (22) is provided with converging guide plates 35, 36 on the workpiece-receiving side.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Discharge By Other Means (AREA)
  • Specific Conveyance Elements (AREA)
US740334A 1967-07-05 1968-06-26 Stacking apparatus for plastics material sheeting Expired - Lifetime US3549145A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW44310A DE1280651B (de) 1967-07-05 1967-07-05 Stapelbildeeinrichtung fuer Papier- oder Kunststoffolienverarbeitungsmaschinen, insbesondere Sackherstellungsmaschinen

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US3549145A true US3549145A (en) 1970-12-22

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US740334A Expired - Lifetime US3549145A (en) 1967-07-05 1968-06-26 Stacking apparatus for plastics material sheeting

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US (1) US3549145A (enrdf_load_stackoverflow)
DE (1) DE1280651B (enrdf_load_stackoverflow)
ES (1) ES355755A1 (enrdf_load_stackoverflow)
FR (1) FR1573463A (enrdf_load_stackoverflow)
GB (1) GB1231219A (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4869265A (enrdf_load_stackoverflow) * 1971-12-21 1973-09-20
US3810694A (en) * 1970-09-10 1974-05-14 Western Litho Plate & Supply Photographic printing apparatus
US3863549A (en) * 1973-04-23 1975-02-04 Union Carbide Corp Gripper-transfer device for plastic bags
US4059264A (en) * 1976-05-03 1977-11-22 Redington, Incorporated Method of feeding a leaflet and the apparatus therefor
US4262897A (en) * 1979-10-01 1981-04-21 Kimberly-Clark Corporation Vertical-to-horizontal conveyor system
EP0113822A1 (en) * 1982-12-17 1984-07-25 Rockwell International Corporation Conveyor with pocket gripping devices
US4509703A (en) * 1982-05-05 1985-04-09 Grapha-Holding Ag Method and apparatus for transporting and storing partially overlapping sheets
DE3427559A1 (de) * 1984-07-26 1986-02-06 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung an einem falzklappenzylinder zur uebernahme von falzprodukten
DE3603781A1 (de) * 1986-02-06 1987-08-13 Roland Man Druckmasch Vorrichtung zur uebernahme und zum weitertransport von falzprodukten
US5040778A (en) * 1990-07-16 1991-08-20 Ark, Inc. Apparatus for automatically inverting workpieces of limp sheet material
US5167406A (en) * 1990-07-16 1992-12-01 Ark, Inc. Apparatus for automatically inverting workpieces of limp sheet material
US5499564A (en) * 1994-04-15 1996-03-19 Ark, Inc. Method and apparatus for forming a spread
US8079588B2 (en) * 2006-07-13 2011-12-20 Lockheed Martin Corporation Mailpiece container for stacking mixed mail and method for stacking mail therein
WO2015176095A1 (de) * 2014-05-20 2015-11-26 Lohia Corp Limited Vorrichtung und verfahren zum transport von schlauchförmigen sackkörpern

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1611416B1 (de) * 1967-08-03 1972-03-16 Windmoeller & Hoelscher Vorrichtung zum transportieren von papier oder kunststoff folienwerkstuecken insbesondere fuer sackherstellungs maschinen
DE3153613C2 (enrdf_load_stackoverflow) * 1980-09-16 1992-06-17 Ferag Ag, Hinwil, Zuerich, Ch
DE19500560A1 (de) * 1995-01-11 1996-07-18 Kolbus Gmbh & Co Kg Verfahren zum Transportieren von Druckprodukten zwischen weiterverarbeitenden Buchbindemaschinen und Vorrichtung zur Durchführung des Verfahrens

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1192919B (de) * 1962-08-21 1965-05-13 Honsel Karl Heinz Ablegevorrichtung an einer Kreuz- oder Klotzbodenbeutelmaschine mit Laengsfoerderung der Beutel

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810694A (en) * 1970-09-10 1974-05-14 Western Litho Plate & Supply Photographic printing apparatus
JPS4869265A (enrdf_load_stackoverflow) * 1971-12-21 1973-09-20
US3863549A (en) * 1973-04-23 1975-02-04 Union Carbide Corp Gripper-transfer device for plastic bags
US4059264A (en) * 1976-05-03 1977-11-22 Redington, Incorporated Method of feeding a leaflet and the apparatus therefor
US4262897A (en) * 1979-10-01 1981-04-21 Kimberly-Clark Corporation Vertical-to-horizontal conveyor system
US4509703A (en) * 1982-05-05 1985-04-09 Grapha-Holding Ag Method and apparatus for transporting and storing partially overlapping sheets
EP0113822A1 (en) * 1982-12-17 1984-07-25 Rockwell International Corporation Conveyor with pocket gripping devices
DE3427559A1 (de) * 1984-07-26 1986-02-06 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung an einem falzklappenzylinder zur uebernahme von falzprodukten
DE3603781A1 (de) * 1986-02-06 1987-08-13 Roland Man Druckmasch Vorrichtung zur uebernahme und zum weitertransport von falzprodukten
US5040778A (en) * 1990-07-16 1991-08-20 Ark, Inc. Apparatus for automatically inverting workpieces of limp sheet material
US5167406A (en) * 1990-07-16 1992-12-01 Ark, Inc. Apparatus for automatically inverting workpieces of limp sheet material
US5499564A (en) * 1994-04-15 1996-03-19 Ark, Inc. Method and apparatus for forming a spread
US8079588B2 (en) * 2006-07-13 2011-12-20 Lockheed Martin Corporation Mailpiece container for stacking mixed mail and method for stacking mail therein
US9359164B2 (en) 2006-07-13 2016-06-07 Lockheed Martin Corporation Mailpiece container for stacking mixed mail and method for stacking mail therein
WO2015176095A1 (de) * 2014-05-20 2015-11-26 Lohia Corp Limited Vorrichtung und verfahren zum transport von schlauchförmigen sackkörpern

Also Published As

Publication number Publication date
DE1280651B (de) 1968-10-17
GB1231219A (enrdf_load_stackoverflow) 1971-05-12
FR1573463A (enrdf_load_stackoverflow) 1969-07-04
ES355755A1 (es) 1970-02-16

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